Force Sensitive Joystick - Source

I am looking for force sensitive joysticks which will be used for vehicle control. These are the type of joysticks with very little to no movement. I have found one supplier so far, Daco, but I am looking for other options. Something a little larger and more robust than what Daco has would be good.

The output of the joystick is not really critical, as I can design the software to accept just about anything.

Let me know if you have any suggestions,

Ryan